This is a pre-order, I expect to start shipping the first batch around Feb 22, 2020. A 2nd batch of boards will be ordered shortly along with face plates, these won't be available until early March 2020. Order now to save which also helps me get everything stocked.
This is the standard DIY controller PCB for Reef-pi, plug in your Raspberry Pi and you're ready to reef.
- Standard controller circuit board
- 13 2-4 pin pluggable screw terminal connectors
- 12v DC power adapter to power up the controller / Pi, between 3-7 Amps depending on the DC equipment you connect
- Raspberry Pi Zero W, Pi 3 or Pi 4
Circuit Board Assembly Options
The default listing has the circuit board coming to you fully assembled and tested. If you enjoy basic soldering you can save $12 using the option on the right side, using this I will mount all the SMD components and power connector to test it and you can solder the other connectors and header pins. All the green dots on the main image are the solder points.
3D Printed Case and Face Plate
I've designed a case to house the controller that you can 3D print yourself or order one on the right side of the page. There are 3 versions available to match the Raspberry Pi being used. You can also add a face plate for the top of the case where the port connectors and headers come out, requires glue. I will also have an editable and printable version so you can personalize the case, you can get it printed as a sticker and cutout holes for the plugs.
Small in size but it packs a punch
All Robo-Tank hardware is built using high quality, over sized components so you can expect it to operate for many years to come. The Reef-pi standard controller board is 78mm x 100mm squared off. The Raspberry Pi gets power through the board so you only need a 12v DC power supply to power the full system. If you use a Pi 3 or 4 two of the outside edges are lined up with the edge of the controller board so you have access to the ports through the case.
Emergency Backup Float Switch Port for DC Port 3
This is a special backup port for DC port 3, a float switch is connected, if open DC port 3 will turn off. It bypasses the Raspberry Pi and other electronics so it always works.
Click the image below to load an interact 3D model, press bottom right button to go full screen and use mouse wheel to zoom in and pan around. Note the case and face plate shown in the image below are optional on this listing.
Ports, Ports and more Ports
There are a total of 37 ports, as the board comes you can connect any any combination of the following up to a count of 37.
- Up to 24 relays for AC outlets
- Up to 5 DC powered devices (12v default, with external power supply 6v-48v)
- Up to 21 digital sensors
- Up to 14 5v PWM ports
- DS18B20 temperature sensors (multiple sensors technically share a port and can only use one port)
- Up to 4 pH/ORP circuits
This is how I've allocated the 37 ports using specific connectors to make connections easy. The above list reflects what can actually connect to these ports, these are only labels. For example, after 16 relays you would use some 5v PWM ports or use some relay ports for more digital sensors.
- 16 Relays for AC outlets - one DB9 serial socket + 8 header pins
- 4 Heavy Duty DC ports - each port has a 2 pin pluggable screw terminal connector
- 1 Auto Feeder port (standard DC) - uses a 3 pin pluggable screw terminal connector
- 1 Emergency Backup Float Switch Port - uses a 2 pin pluggable screw terminal connector
- 3 Digital Sensor Ports - each port has a 3 pin pluggable screw terminal connector
- 4 5v PWM Ports - uses a single 4 pin pluggable screw terminal connector
- 8 5v PWM Ports - uses 8 header pins
- 5 DS18B20 Temperature Ports - 2 use a 3 pin pluggable screw terminal connector, 3 use header pins (note you may be able to connect more sensors on the same pins)
Reef-pi DIY Standard Aquarium Controller PCB
- Product Code: reefpiBpcb
- Availability: Pre-Order
- $62.95 USD